*{
    margin: 0;
    padding: 0;
}

html body{
    width: 100%;
    height: 100%;
}


.wrap{
    width: 690px;
    height: 400px;
    margin: 100px;
    border: 1px solid red;
    position: relative;
    overflow: hidden;
}

.wrap img{
    width: 690px;
    height: 400px;
    display: block;
    opacity: 0.5;
    transition: all 0.5s;
}


.wrap:hover img{
    opacity: 1;
    transform: scale(1.5, 1.5);
}